Im an idoit when it comes to this stuff but, I got a few old engines from my grandpa that used to fly years ago, and their is 3 OS 40's but only 1 has a muffler and it is not like the mufflers today they are a clamp style. Their is no bolts that go through the engine but a metal bracket goes around it??? Any one seen thease before and is their anyway to still find one new or used dont care as long as it works. Ive tested the motors with out the muffler and they worked good so I really would like to find atleast 1 muffler.
Any help would be appreciated
Sry for lack of info but thats all I know
Thanks
Jason